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The half-life of a radioactive substance...

The half-life of a radioactive substance is 10 days. This means that

A

The substance completely disintegrates in 20 days

B

The substace completely disintegrates in 40 days

C

`1//8` part of the mass of the substance will be left intact at the end of 40 days

D

`7//8` part of the mass of the substance disintegrates in 30 days

Text Solution

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The correct Answer is:
D
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